Access Control Lists (ACLs)

ACLs, pronounced “ackkls”, can provide greater control over file permissions. You add ACLs when the traditional UNIX file protection in the Solaris operating environment is not sufficient. The traditional UNIX file protection provides read, write, and execute permissions for the three user classes: owner, group, and other. An ACL provides finer-grained file security. ACLs enable you to define the following file permissions:

• Owner file permissions

• Owner's group file permissions

• File permissions for other users who are outside the owner's group

• File permissions for specific users

• File permissions for specific groups

• Default permissions for each of the previous categories

For step–by–step instructions on using ACLs, see Using Access Control Lists (ACLs).

The following table lists the commands for administering ACLs on files or directories.